Micrel, Inc.

MIC24055

December 2012

8

M9999-120712-A

Typical Characteristics (Continued)

Die Temperature* : The temperature measurement was taken at the hottest point on the MIC24055 case mounted on a 5 square inch, 4 layer,

0.62 inch, FR-4 PCB with 2oz finish copper weight per layer, see Thermal Measurement section. Actual results will depend upon the size of the PCB,

ambient temperature and proximity to other heat emitting components.

0

5

10

15

20

25

30

-50

-25

0

25

50

75

100

125

TEMPERATURE (

°C)

Output Current Limit

vs. Temperature

VIN = 12V

V

0.792

0.796

0.800

0.804

0.808

0

2

4

6

8

10

12

OUTPUT CURRENT (A)

Feedback Voltage

vs. Output Current

VIN = 12V

V

1.782

1.787

1.791

1.796

1.800

1.805

1.810

1.814

1.819

0

2

4

6

8

10

12

OUTPUT CURRENT (A)

Output Voltage

vs. Output Current

VIN = 12V

V

-1.0%

-0.5%

0.0%

0.5%

1.0%

0

2

4

6

8

10

12

OUTPUT CURRENT (A)

Line Regulation

vs. Output Current

VIN = 4.5V to 19V

V

500

550

600

650

700

0

2

4

6

8

10

12

OUTPUT CURRENT (A)

Switching Frequency

vs. Output Current

VIN = 12V

V

3.0

3.4

3.8

4.2

4.6

5.0

0

3

6

9

12

15

OUTPUT CURRENT (A)

Output Voltage (VIN = 5V)

vs. Output Current

T

A

25ºC

85ºC

125ºC

VIN = 5V

V

50

55

60

65

70

75

80

85

90

95

100

0

3

6

9

12

15

OUTPUT CURRENT (A)

Efficiency (VIN = 5V)

vs. Output Current

3.3V

2.5V

1.8V

1.5V

1.2V

1.0V

0.9V

0.8V

VIN = 5V

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

0

3

6

9

12

OUTPUT CURRENT (A)

IC Power Dissipation (VIN = 5V)

vs. Output Current

VIN = 5V

V

V

0

20

40

60

80

100

0

2

4

6

8

10

12

OUTPUT CURRENT (A)

Die Temperature* (VIN = 5V)

vs. Output Current

VIN = 5V

V